Title
Transparent offloading of computational hotspots from binary code to Xeon Phi
Abstract
In this paper, we study how binary applications can be transparently accelerated with novel heterogeneous computing resources without requiring any manual porting or developer-provided hints. Our work is based on Binary Acceleration At Runtime (BAAR), our previously introduced binary acceleration mechanism that uses the LLVM Compiler Infrastructure. BAAR is designed as a client-server architecture. The client runs the program to be accelerated in an environment, which allows program analysis and profiling and identifies and extracts suitable program parts to be offloaded. The server compiles and optimizes these offloaded program parts for the accelerator and offers access to these functions to the client with a remote procedure call (RPC) interface. Our previous work proved the feasibility of our approach, but also showed that communication time and overheads limit the granularity of functions that can be meaningfully offloaded. In this work, we motivate the importance of a lightweight, high-performance communication between server and client and present a communication mechanism based on the Message Passing Interface (MPI). We evaluate our approach by using an Intel Xeon Phi 5110P as the acceleration target and show that the communication overhead can be reduced from 40% to 10%, thus enabling even small hotspots to benefit from offloading to an accelerator.
Year
Venue
Keywords
2015
DATE
acceleration,real time,client server architecture,message passing,servers,remote procedure call,binary codes,mpi,binary code,best effort,optimization,xeon phi,computer architecture,remote procedure calls,message passing interface,program analysis
Field
DocType
ISSN
Remote procedure call,Computer science,Profiling (computer programming),Xeon Phi,Symmetric multiprocessor system,Real-time computing,Message Passing Interface,Parallel computing,Compiler,Porting,Program analysis,Operating system,Embedded system
Conference
1530-1591
Citations 
PageRank 
References 
5
0.60
8
Authors
4
Name
Order
Citations
PageRank
Marvin Damschen1154.66
Heinrich Riebler2133.58
Gavin Vaz3122.85
Christian Plessl429735.98